Abstract: Disclosed are a novel monofunctional polyethylene glycol (PEG) and derivatives thereof. More particularly, one terminal of each of the monofunctional polyethylene glycol and derivatives thereof is modified with a siloxy group. The novel monofunctional polyethylene glycol (PEG) offers an alternative to methoxy polyethylene glycol.
Type:
Grant
Filed:
March 22, 2021
Date of Patent:
April 9, 2024
Assignee:
SUNBIO, INC.
Inventors:
Kwang Nho, Minjung Ahn, Changmin Hyun, Junghoon Lee
Abstract: Disclosed are a novel monofunctional polyethylene glycol (PEG) and derivatives thereof. More particularly, one terminal of each of the monofunctional polyethylene glycol and derivatives thereof is modified with a tertiary alkoxy group.
Type:
Grant
Filed:
April 11, 2019
Date of Patent:
January 5, 2021
Assignee:
SUNBIO INC.
Inventors:
Kwang Nho, Min Jung Ahn, Junghoon Lee, Changmin Hyun
Abstract: Disclosed are a novel monofunctional polyethylene glycol (PEG) and derivatives thereof. More particularly, one terminal of each of the monofunctional polyethylene glycol and derivatives thereof is modified with a tertiary alkoxy group.
Type:
Application
Filed:
April 11, 2019
Publication date:
October 15, 2020
Applicant:
SUNBIO INC.
Inventors:
Kwang Nho, Min Jung Ahn, Junghoon Lee, Changmin Hyun
Abstract: The present invention provides a hair treatment composition comprising a multi-arm polyethylene glycol derivative (A) that contains two or more functional groups that may be covalently bound to amines, a hair treatment agent comprising the composition, and a method for using the same. Optionally, the composition may further comprise a polyethylene glycol derivative (B), a biocompatible polymer (C), or both, wherein the derivative (B) and polymer (C) each contains one or more functional groups that may react with the functional groups of the derivative (A).
Abstract: The present invention relates to novel hexa-arm polyethylene glycol (6-arm PEG) and its derivatives. The core of 6-arm PEG derivatives is sorbitol and the end groups can be derivatized into many different reactive functionalities that are useful in conjugating with many different targets. The present invention also provides a biodegradable polymeric hydrogel-forming composition comprising the 6-arm PEG and its derivatives, and methods of using such 6-arm PEG derivatives as surgical or biological implants or sealants.
Type:
Grant
Filed:
December 23, 2002
Date of Patent:
February 22, 2005
Assignee:
SunBio, Inc.
Inventors:
Kwang Nho, Hyun Chang-min, Jung-Hun Lee, In-Kyung Kim, Young-Kyoung Pak
Abstract: The present invention relates to novel synthetic methods for PEG-maleimide derivatives, specifically, novel synthetic methods for PEG-maleimide. The final products thereof are useful as a pegylation reagent in the field of bioengineering and the medicinal field or the preparation of medical appliances and by conjugating with certain moieties or specific domains of polysaccharides and biological proteins such as antibodies as a bio-compatible or bio-degradable polymer.
Type:
Grant
Filed:
October 29, 2003
Date of Patent:
December 7, 2004
Assignee:
SunBio Inc.
Inventors:
Kwang Nho, Changmin Hyun, Junghun Lee, Youngkyoung Pak
Abstract: The present invention relates to novel hexa-arm polyethylene glycol (6-arm PEG) and its derivatives. The core of 6-arm PEG derivatives is sorbitol and the end groups can be derivatized into many different reactive functionalities that are useful in conjugating with many different targets. The present invention also provides a biodegradable polymeric hydrogel-forming composition comprising the 6-arm PEG and its derivatives, and methods of using such 6-arm PEG derivatives as surgical or biological implants or sealants.
Type:
Application
Filed:
December 23, 2002
Publication date:
May 20, 2004
Applicant:
SunBio Inc.
Inventors:
Nho Kwang, Hyun Chang-min, Lee Jung-Hun, Kim In-Kyung, Pak Young-Kyoung
Abstract: The invention relates to a method for treating symptoms such as stroke comprising administering PEG-hemoglobin (polyethylene glycol-conjugated hemoglobin) solution with specific ability to deliver oxygen to cells under ischemia or hypoxia.